CN102139900B - Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge - Google Patents
Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge Download PDFInfo
- Publication number
- CN102139900B CN102139900B CN2010105589334A CN201010558933A CN102139900B CN 102139900 B CN102139900 B CN 102139900B CN 2010105589334 A CN2010105589334 A CN 2010105589334A CN 201010558933 A CN201010558933 A CN 201010558933A CN 102139900 B CN102139900 B CN 102139900B
- Authority
- CN
- China
- Prior art keywords
- hydrochloric acid
- sulfate
- boric sludge
- gained
- calcium sulfate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Removal Of Specific Substances (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treatment Of Sludge (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention belongs to the technical field of three-waste (waste water, waste gas and waste residues) treatment and comprehensive utilization of inorganic chemical industry, particularly discloses a method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge. The method disclosed by the invention comprises the following steps of: firstly, heating the boric sludge with steam; secondly, separating and reacting the boric sludge with hydrochloric acid; and finally, distilling and cooling according to different solubilities of matters, and separating to obtain the product. The method disclosed by the invention can be used for sufficiently treating the waste residues of the boric sludge and reducing thepollution of the waste residues of the boric sludge to the environment; in addition, the valuable magnesium sulfate heptahydrate, manganese sulfate and calcium sulfate products are prepared, so that the method disclosed by the invention not only has remark social and economic benefits, but also has a simple process and production equipment and is a practical treating and utilizing method.
Description
Technical field
The invention belongs to the technical field of the inorganic chemical industry disposal of three wastes and comprehensive utilization, particularly a kind of method that is equipped with MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate with boric sludge.
Technical background
Producing the waste residue that products such as boric acid, borax produce, is with szaibelyite (MgOB
2O
3H
2O) be raw material, through roasting, pulverizing, mix, take the carbon water law to produce borax (Na with soda ash
2B
4O
710H
2O), washing again, crystallisation process extract the solid waste that is left behind the borax; This solid waste is pearl, yellow-white powdery solid, is alkalescence, contains components such as boron oxide and Natural manganese dioxide, is commonly called as " boron mud ".One ton of borax of boron mud production can produce 4 tons of boron mud, and a borax of producing 8000 tons produces, and can produce 3.2 ten thousand tons in boron mud every year.The disposal of storing up of boron mud not only takies a large amount of soils, and can make near the alkalization of soils the stockyard and cause that the migration of boron transforms, and causes environmental pollution.Because the quantity discharged of boron mud is bigger, the present domestic multiple comprehensive Utilization Ways of taking except that producing Magnesium Carbonate Light 41-45 and Natural manganese dioxide and plastic and rubber filler, also has the coal of producing boron magnesium phosphorus composite fertilizer, making honeycomb briquette to add labor and materials and do architectural borax etc.Though these methods are handled filter residue certain effect being arranged, all be to want the buy-birth prodn. art complicated, or the product that generates is comparatively single; Boric sludge also of no use is equipped with the relevant report of the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate at present.
Summary of the invention
The invention provides the method that is equipped with MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate with boric sludge, this method can not only effectively be handled waste residue, can also make multiple value product.
In order to reach above-mentioned purpose, technical scheme of the present invention is:
A kind ofly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, comprise being prepared as follows step with boric sludge:
Steps A, boron mud is transferred in the reaction kettle, heats, when temperature reaches 60 ℃～80 ℃, be incubated 1～2 hour with steam;
Step B, with in the steps A heat boron mud carry out solid-liquid separation with the drying whizzer, liquid is sent to deep processing;
Step C, separating obtained boron mud solid among the step B is sent into first corrosion-resistant reactor, add hydrochloric acid soln toward first corrosion-resistant reactor simultaneously, stir and make it to react; Said boron mud solid and hydrochloric acid soln react with the pure mass ratio of converting 1: 1.63～2.03;
Step D, gained reaction mixture among the step C is filtered with first strainer, filter cake is sent to deep processing;
Step e, drop into successively in second corrosion-resistant reactor with pure mass ratio 1: 0.83～1.23 with sulfuric acid and stir filtering gained filtrating among the step D, reaction generates MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, calcium sulfate, manganous sulfate and hydrochloric acid mixed solution;
Step F, gained mixing solutions in the step e is filtered with second strainer;
Step F, the white filter cake that filters gained in the step e washed to check the weight after dryings, drying and the pulverizing with first washing and spin-drying machine, first moisture eliminator and first kibbler successively be packaged to be two H 2 O calcium sulphates;
Step G, the filtrating of filtering gained in the step F sent into carry out underpressure distillation in the underpressure distillation device; When solution reaches protection concentration; Distillate discharged send into the cooling tower cooling, the gained crystal washs to check the weight after dryings, drying and the pulverizing with second washing and spin-drying machine, second moisture eliminator and second kibbler and is packaged to be the MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product; Continue distillation and obtain manganous sulfate, the hydrochloric acid soln that distills returns first corrosion-resistant reactor and recycles.
Wherein, the hydrochloric acid soln among the said step C is that volumetric concentration is 30%～60% hydrochloric acid soln.
Sulfuric acid in the said step e is that volumetric concentration is 10%～20% sulphuric acid soln.
Magnesium in the boron mud generally all is that the form with magnesiumcarbonate exists, and is sometimes also different and difference arranged along with the mineral products of szaibelyite.The component of producing Magnesium Carbonate Light 41-45 boron mud is such: Natural manganese dioxide 38%, silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, quicklime 3% manganese oxide 0.11%, other are moisture.
The present invention is that to be raw material make it to become oxide compound through hydrochloric acid forms solution with boron mud, removes the compound that non-solubility impurity obtains magnesium.At the compound of other magnesium of processing, also has compound of boron or the like then.Therefore, with regard to the purity of producing, be impeccable, quality also reaches a standard.Mainly be earlier boron mud to be used steam heating, separate then, react with hydrochloric acid again, distill cooling according to the difference of substance dissolves degree at last, separate obtaining product; The present invention can as clean as a pennyly gulp down boron mud waste residue, alleviates the pollution of boron mud waste residue to environment; Can make valuable MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, manganous sulfate and calcium sulfate product again, not only have remarkable social benefit and economic benefit, and technology and production unit are simple, be a kind of relatively actual processing and utilize method.
Reaction principle of the present invention is:
MgO+2HCl＝MgCl
2+H
2O
MgCl
2+H
2SO
4+H
2O＝Mg?SO
4·7H
2O+2HCl
CaO+2HCl＝CaCl
2+H
2O
CaCl
2+H
2SO
4＝CaSO
4+2HCl
MnO+2HCl＝MnCl
2+H
2O
MnCl
2+H
2SO
4＝MnSO
4+2HCl
Description of drawings
Fig. 1 is the process flow sheet that is equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate with boric sludge; Wherein:
The 1-reaction kettle, 2-dries whizzer, 3-first corrosion-resistant reactor, 4-first strainer, 5-second corrosion-resistant reactor; 6-second strainer, 7-first washing and spin-drying machine, 8-first moisture eliminator, 9-first kibbler; 10-two H 2 O calcium sulphates, 11-underpressure distillation device, 12-cooling tower, 13-second washing and spin-drying machine; 14-second moisture eliminator, 15-second kibbler, 16-MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product, 17-manganous sulfate.
Concrete embodiment
Embodiment 1
A kind ofly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, it is characterized in that, comprise being prepared as follows step with boric sludge:
Steps A, boron mud 1000Kg is transferred in the reaction kettle 1, heats, when temperature reaches 60 ℃～80 ℃, be incubated 1～2 hour with steam; Wherein, Natural manganese dioxide 38% (380Kg), silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, quicklime 3% (30Kg) manganese oxide 0.11% (1.1Kg), other are moisture.
Step B, with in the steps A heat boron mud with the drying whizzer 2 carry out solid-liquid separation, liquid is sent to deep processing;
Step C, separating obtained boron mud solid among the step B is sent into first corrosion-resistant reactor 3, add hydrochloric acid solns toward first corrosion-resistant reactor 3 simultaneously, stir and make it to react; Said boron mud solid and hydrochloric acid soln react with the pure mass ratio of converting at 1: 1.63; Wherein, said hydrochloric acid soln is that volumetric concentration is 30% hydrochloric acid soln.
Step D, gained reaction mixture among the step C is filtered with first strainer 4, filter cake is sent to deep processing;
Step e, successively drop into second corrosion-resistant reactor with sulfuric acid at 1: 0.83 with pure mass ratio and stir for 5 li filtering gained filtrating among the step D, reaction generates MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, calcium sulfate, manganous sulfate and hydrochloric acid mixed solution; Sulfuric acid in the said step e is that volumetric concentration is 10% sulphuric acid soln.
Step F, gained mixing solutions in the step e is filtered with second strainer 6;
Step F, the white filter cake that filters gained in the step e washed to check the weight after dryings, drying and the pulverizing with first washing and spin-drying machine 7, first moisture eliminator 8 and first kibbler 9 successively be packaged to be 45.12Kg two H 2 O calcium sulphates 10;
Step G, the filtrating of filtering gained in the step F sent into carry out underpressure distillation in the underpressure distillation device 11; When solution reaches protection concentration; Distillate discharged send into cooling tower 12 coolings, the gained crystal washs to check the weight after dryings, drying and the pulverizing with second washing and spin-drying machine 13, second moisture eliminator 14 and second kibbler 15 and is packaged to be 797.00Kg MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product 16; Continue distillation and obtain 2.08Kg manganous sulfate 17, the hydrochloric acid soln that distills returns first corrosion-resistant reactor 3 and recycles.
Embodiment 2
A kind ofly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, it is characterized in that, comprise being prepared as follows step with boric sludge:
Steps A, boron mud 1000Kg is transferred in the reaction kettle 1, heats, when temperature reaches 60 ℃～80 ℃, be incubated 1～2 hour with steam; Wherein, Natural manganese dioxide 38% (380Kg), silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, quicklime 3% (30Kg) manganese oxide 0.11% (1.1Kg), other are moisture.
Step B, with in the steps A heat boron mud with the drying whizzer 2 carry out solid-liquid separation, liquid is sent to deep processing;
Step C, separating obtained boron mud solid among the step B is sent into first corrosion-resistant reactor 3, add hydrochloric acid solns toward first corrosion-resistant reactor 3 simultaneously, stir and make it to react; Said boron mud solid and hydrochloric acid soln react with the pure mass ratio of converting at 1: 2.13; Wherein, said hydrochloric acid soln is that volumetric concentration is 40% hydrochloric acid soln.
Step D, gained reaction mixture among the step C is filtered with first strainer 4, filter cake is sent to deep processing;
Step e, successively drop into second corrosion-resistant reactor with sulfuric acid at 1: 1.03 with pure mass ratio and stir for 5 li filtering gained filtrating among the step D, reaction generates MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, calcium sulfate, manganous sulfate and hydrochloric acid mixed solution; Sulfuric acid in the said step e is that volumetric concentration is 15% sulphuric acid soln.
Step F, gained mixing solutions in the step e is filtered with second strainer 6;
Step F, the white filter cake that filters gained in the step e washed to check the weight after dryings, drying and the pulverizing with first washing and spin-drying machine 7, first moisture eliminator 8 and first kibbler 9 successively be packaged to be 56.86Kg two H 2 O calcium sulphates 10;
Step G, the filtrating of filtering gained in the step F sent into carry out underpressure distillation in the underpressure distillation device 11; When solution reaches protection concentration; Distillate discharged send into cooling tower 12 coolings, the gained crystal washs to check the weight after dryings, drying and the pulverizing with second washing and spin-drying machine 13, second moisture eliminator 14 and second kibbler 15 and is packaged to be 1170.52Kg MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product 16; Continue distillation and obtain 2.31Kg manganous sulfate 17, the hydrochloric acid soln that distills returns first corrosion-resistant reactor 3 and recycles.
Embodiment 3
A kind ofly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, it is characterized in that, comprise being prepared as follows step with boric sludge:
Steps A, boron mud 1000Kg is transferred in the reaction kettle 1, heats, when temperature reaches 60 ℃～80 ℃, be incubated 1～2 hour with steam; Wherein, Natural manganese dioxide 38% (380Kg), silicon-dioxide 20%, carbonic acid gas 17%, boron oxide 3%, quicklime 3% (30Kg) manganese oxide 0.11% (1.1Kg), other are moisture.
Step B, with in the steps A heat boron mud with the drying whizzer 2 carry out solid-liquid separation, liquid is sent to deep processing;
Step C, separating obtained boron mud solid among the step B is sent into first corrosion-resistant reactor 3, add hydrochloric acid solns toward first corrosion-resistant reactor 3 simultaneously, stir and make it to react; Said boron mud solid and hydrochloric acid soln react with the pure mass ratio of converting at 1: 2.03; Wherein, said hydrochloric acid soln is that volumetric concentration is 60% hydrochloric acid soln.
Step D, gained reaction mixture among the step C is filtered with first strainer 4, filter cake is sent to deep processing;
Step e, successively drop into second corrosion-resistant reactor with sulfuric acid at 1: 1.23 with pure mass ratio and stir for 5 li filtering gained filtrating among the step D, reaction generates MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, calcium sulfate, manganous sulfate and hydrochloric acid mixed solution; Sulfuric acid in the said step e is that volumetric concentration is 20% sulphuric acid soln.
Step F, gained mixing solutions in the step e is filtered with second strainer 6;
Step F, the white filter cake that filters gained in the step e washed to check the weight after dryings, drying and the pulverizing with first washing and spin-drying machine 7, first moisture eliminator 8 and first kibbler 9 successively be packaged to be 72.81Kg two H 2 O calcium sulphates 10;
Step G, the filtrating of filtering gained in the step F sent into carry out underpressure distillation in the underpressure distillation device 11; When solution reaches protection concentration; Distillate discharged send into cooling tower 12 coolings, the gained crystal washs to check the weight after dryings, drying and the pulverizing with second washing and spin-drying machine 13, second moisture eliminator 14 and second kibbler 15 and is packaged to be 2085.34Kg MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product 16; Continue distillation and obtain 2.34Kg manganous sulfate 17, the hydrochloric acid soln that distills returns first corrosion-resistant reactor 3 and recycles.
The foregoing description is preferred embodiment of the present invention, is not to be used for limiting practical range of the present invention, so all equivalences of being done with described characteristic of claim of the present invention and principle change or modify, all should be included within the claim scope of the present invention.
Claims (3)
1. be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate with boric sludge, it is characterized in that, comprise being prepared as follows step:
Steps A, boron mud is transferred in the reaction kettle (1), heats, when temperature reaches 60 ℃～80 ℃, be incubated 1～2 hour with steam;
Step B, with in the steps A heat boron mud with the drying whizzer (2) carry out solid-liquid separation, liquid is sent to deep processing;
Step C, separating obtained boron mud solid among the step B is sent into first corrosion-resistant reactor (3), add hydrochloric acid soln toward first corrosion-resistant reactor (3) simultaneously, stir and make it to react; Said boron mud solid and hydrochloric acid soln react with the pure mass ratio of converting 1: 1.63～2.03; Wherein, said boron mud solid calculates by Natural manganese dioxide;
Step D, gained reaction mixture among the step C is filtered with first strainer (4), filter cake is sent to deep processing;
Step e, drop into second corrosion-resistant reactor (5) lining with sulfuric acid successively with pure mass ratio 1: 0.83～1.23 and stir filtering gained filtrating among the step D, reaction generates MAGNESIUM SULPHATE HEPTAHYDRATE 99.5, calcium sulfate, manganous sulfate and hydrochloric acid mixed solution;
Step F, gained mixing solutions in the step e is filtered with second strainer (6);
Step F, the white filter cake that filters gained in the step e used first washing and spin-drying machine (7), first moisture eliminator (8) and first kibbler (9) to wash to check the weight after dryings, drying and the pulverizing successively be packaged to be two H 2 O calcium sulphates (10);
Step G, the filtrating of filtering gained in the step F sent in the underpressure distillation device (11) carry out underpressure distillation; When solution reaches protection concentration; Distillate discharged send into cooling tower (12) cooling, the gained crystal washs to check the weight after drying, drying and the pulverizing with second washing and spin-drying machine (13), second moisture eliminator (14) and second kibbler (15) and is packaged to be MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 product (16); Continue distillation and obtain manganous sulfate (17), the hydrochloric acid soln that distills returns first corrosion-resistant reactor (3) and recycles.
2. according to claim 1ly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, it is characterized in that the hydrochloric acid soln among the said step C is that volumetric concentration is 30%～60% hydrochloric acid soln with boric sludge.
3. according to claim 1ly be equipped with the method for MAGNESIUM SULPHATE HEPTAHYDRATE 99.5 co-producing sulfuric acid manganese and calcium sulfate, it is characterized in that the sulfuric acid in the said step e is that volumetric concentration is 10%～20% sulphuric acid soln with boric sludge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105589334A CN102139900B (en) | 2010-11-25 | 2010-11-25 | Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105589334A CN102139900B (en) | 2010-11-25 | 2010-11-25 | Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102139900A CN102139900A (en) | 2011-08-03 |
| CN102139900B true CN102139900B (en) | 2012-05-23 |
Family
ID=44407724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105589334A Expired - Fee Related CN102139900B (en) | 2010-11-25 | 2010-11-25 | Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102139900B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062713A (en) * | 1990-12-22 | 1992-07-15 | 北京市朝阳区双桥环保制剂厂 | Compound purifying agent for sewage and method for making thereof |
| JP2002275548A (en) * | 2001-03-14 | 2002-09-25 | Santoku Corp | Method for separating boron from boron-containing alloy sludge |
| CN1386721A (en) * | 2001-05-18 | 2002-12-25 | 中国科学院长春应用化学研究所 | Process for preparing high-purity magnesite product series from boron contained mud |
-
2010
- 2010-11-25 CN CN2010105589334A patent/CN102139900B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1062713A (en) * | 1990-12-22 | 1992-07-15 | 北京市朝阳区双桥环保制剂厂 | Compound purifying agent for sewage and method for making thereof |
| JP2002275548A (en) * | 2001-03-14 | 2002-09-25 | Santoku Corp | Method for separating boron from boron-containing alloy sludge |
| CN1386721A (en) * | 2001-05-18 | 2002-12-25 | 中国科学院长春应用化学研究所 | Process for preparing high-purity magnesite product series from boron contained mud |
Non-Patent Citations (1)
| Title |
|---|
| 宁志强等.利用硼泥制备七水硫酸镁的研究.《轻金属》.2007,(第7期),61-63. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102139900A (en) | 2011-08-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104495899A (en) | Method for synergic resource utilization of acetylene sludge and coal ash | |
| CN105217589B (en) | The power-economizing method of yellow phosphorus coproduction sylvite, sodium carbonate and aluminum oxide | |
| CN103910372A (en) | Novel method for preparing strontium carbonate for industrial use by using strontium salt residues | |
| CN101891256B (en) | Production technique of high-purity potassium permanganate and manganese dioxide, and carbon dioxide reaction tower | |
| CN103332994A (en) | Method and system for comprehensively utilizing biomass ash | |
| CN109231250A (en) | A method of calcining carbide slag prepares calcium carbonate in Galuber's salt type brine cleaning procedure | |
| CN102139900B (en) | Method for preparing magnesium sulfate heptahydrate co-produced with manganese sulfate and calcium sulfate from boric sludge | |
| CN102167384A (en) | Method for preparing precipitated barium sulfate coproduced with hydrochloric acid by using barium mud | |
| CN102139899B (en) | Method for preparing magnesium sulfate monohydrate and co-producing manganese sulfate and calcium sulfate by using boric sludge | |
| CN105502443A (en) | Method of producing magnesium nitrate hyperhydrate with boron mud waste material | |
| CN104030333B (en) | Method for joint production of strontium nitrate and barium nitrate from high-calcium strontianite and witherite | |
| CN101857467B (en) | Process method for preparing potassium fertilizer by reaction of ammonia evaporation wastewater in soda plant and potash feldspar | |
| CN102139898A (en) | Method for preparing magnesium chloride dihydrate and co-producing manganese hydroxide and calcium hydroxide by using boric sludge | |
| CN101837997B (en) | Method for preparing magnesium carbonate and co-producing sodium carbonate and calcium sulfate from soda ash salt mud | |
| CN105197901B (en) | Phosphorus ore containing potassium prepares the power-economizing method of yellow phosphorus, sylvite, sodium carbonate and aluminum oxide | |
| CN102139896A (en) | Method for preparing magnesium chloride hexahydrate co-produced with manganese hydrate and calcium hydroxide from boric sludge | |
| CN102167370A (en) | Method for preparing anhydrous magnesium chloride and coproducing manganic hydroxide and calcium hydroxide by utilizing boric sludge | |
| CN105417558A (en) | Method for producing anhydrous magnesium sulfate by boric sludge wastes | |
| CN102219240A (en) | Method for cogenerating calcium hydroxide and manganese hydroxide by high magnesium nitrate hydrate prepared by boric sludge | |
| CN102167329A (en) | Method for preparing solid silicic acid from filter residue of boric sludge | |
| CN102180450A (en) | Method for preparing magnesium hydrogen phosphate anhydride and co-producing calcium hydroxide and sodium chloride with boron mud | |
| CN105883868A (en) | Method for co-production of anhydrous magnesium nitrate, calcium hydroxide and manganese hydroxide from boron mud | |
| CN105883841A (en) | Method for producing sodium tetraborate and ammonium chloride from boron mud waste liquid | |
| CN105883869A (en) | Method for producing magnesium nitrate lower hydrate from boron mud waste material | |
| CN105502412A (en) | Method for producing solid silicic acid by using waste boron mud residue |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WANG JINGYU Free format text: FORMER OWNER: WANG JINQIANG Effective date: 20131008 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 523000 DONGGUAN, GUANGDONG PROVINCE TO: 315000 NINGBO, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131008 Address after: 58 No. 315000 Zhejiang City Renhe Center City of Ningbo province Haishu District Daqi Gate Street in front of the building Patentee after: Wang Jingyu Address before: 523000 CITIC triumph city A11, Dongguan, Guangdong, Dongcheng District Patentee before: Wang Jinqiang |
|
| ASS | Succession or assignment of patent right |
Owner name: NANTONG YALUN CHEMICALS CO., LTD. Free format text: FORMER OWNER: WANG JINGYU Effective date: 20131206 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 315000 NINGBO, ZHEJIANG PROVINCE TO: 226314 NANTONG, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20131206 Address after: 226314 Jiangsu city of Nantong province Tongzhou District Chuan Jiang town west of Sichuan Patentee after: Nantong Aaron Chemical Co., Ltd. Address before: 58 No. 315000 Zhejiang City Renhe Center City of Ningbo province Haishu District Daqi Gate Street in front of the building Patentee before: Wang Jingyu |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120523 Termination date: 20131125 |